FormsAuthentication.Encrypt メソッド
アセンブリ: System.Web (system.web.dll 内)

Dim ticket As FormsAuthenticationTicket Dim returnValue As String returnValue = FormsAuthentication.Encrypt(ticket)
戻り値
暗号化された認証チケットが格納された文字列。


FormsCookieName プロパティを使用して Encrypt メソッドの結果を Cookie に格納し、GetRedirectUrl メソッドから返される URL にユーザーをリダイレクトするコード例を次に示します。
<%@ Page Language="VB" %> <%@ Import Namespace="System.Web.Security" %> <script runat="server"> Private Sub Login_Click(sender As Object, e As EventArgs) ' Create a custom FormsAuthenticationTicket containing ' application specific data for the user. Dim username As String = UserNameTextBox.Text Dim password As String = UserPassTextBox.Text Dim isPersistent As Boolean = PersistCheckBox.Checked If Membership.ValidateUser(username, password) Then Dim userData As String = "ApplicationSpecific data for this user." Dim ticket As FormsAuthenticationTicket = New FormsAuthenticationTicket(1, _ username, _ DateTime.Now, _ DateTime.Now.AddMinutes(30), _ isPersistent, _ userData, _ FormsAuthentication.FormsCookiePath) ' Encrypt the ticket. Dim encTicket As String = FormsAuthentication.Encrypt(ticket) ' Create the cookie. Response.Cookies.Add(New HttpCookie(FormsAuthentication.FormsCookieName, encTicket)) ' Redirect back to original URL. Response.Redirect(FormsAuthentication.GetRedirectUrl(username, isPersistent)) Else Msg.Text = "Login failed. Please check your user name and password and try again." End If End Sub </script> <html> <head> <title>Forms Authentication Login</title> </head> <body> <form runat="server"> <span style="BACKGROUND: #80ff80"> <h3>Login Page</h3> </span> <asp:Label id="Msg" ForeColor="maroon" runat="server" /><P> <table border=0> <tbody> <tr> <td>Username:</td> <td><asp:TextBox id="UserNameTextBox" type="text" runat="server" /></td> <td> <asp:RequiredFieldValidator id="RequiredFieldValidator1" runat="server" ErrorMessage="*" Display="Static" ControlToValidate="UserNameTextBox" /> </td> </tr> <tr> <td>Password:</td> <td><asp:TextBox id="UserPassTextBox" TextMode="Password" runat="server" /></td> <td> <asp:RequiredFieldValidator id="RequiredFieldValidator2" runat="server" ErrorMessage="*" Display="Static" ControlToValidate="UserPassTextBox" /> </td> </tr> <tr> <td>Check here if this is <u>not</u><br>a public computer:</td> <td><asp:CheckBox id="PersistCheckBox" runat="server" autopostback="true" /></td> </tr> </tbody> </table> <input type="submit" value="Login" runat="server" onserverclick="Login_Click" /> </form> </body> </html>
<%@ Page Language="C#" %> <%@ Import Namespace="System.Web.Security" %> <script runat="server"> private void Login_Click(Object sender, EventArgs e) { // Create a custom FormsAuthenticationTicket containing // application specific data for the user. string username = UserNameTextBox.Text; string password = UserPassTextBox.Text; bool isPersistent = PersistCheckBox.Checked; if (Membership.ValidateUser(username, password)) { string userData = "ApplicationSpecific data for this user."; FormsAuthenticationTicket ticket = new FormsAuthenticationTicket(1 , username, DateTime.Now, DateTime.Now.AddMinutes(30), isPersistent, userData, FormsAuthentication.FormsCookiePath); // Encrypt the ticket. string encTicket = FormsAuthentication.Encrypt(ticket); // Create the cookie. Response.Cookies.Add(new HttpCookie(FormsAuthentication.FormsCookieName, encTicket)); // Redirect back to original URL. Response.Redirect(FormsAuthentication.GetRedirectUrl(username, isPersistent)); } else { Msg.Text = "Login failed. Please check your user name and password and try again."; } } </script> <html> <head> <title>Forms Authentication Login</title> </head> <body> <form runat="server"> <span style="BACKGROUND: #80ff80"> <h3>Login Page</h3> </span> <asp:Label id="Msg" ForeColor="maroon" runat="server" /><P> <table border=0> <tbody> <tr> <td>Username:</td> <td><asp:TextBox id="UserNameTextBox" type="text" runat="server" /></td> <td> <asp:RequiredFieldValidator id="RequiredFieldValidator1" runat="server" ErrorMessage="*" Display="Static" ControlToValidate="UserNameTextBox" /> </td> </tr> <tr> <td>Password:</td> <td><asp:TextBox id="UserPassTextBox" TextMode="Password" runat="server" /></td> <td> <asp:RequiredFieldValidator id="RequiredFieldValidator2" runat="server" ErrorMessage="*" Display="Static" ControlToValidate="UserPassTextBox" /> </td> </tr> <tr> <td>Check here if this is <u>not</u><br>a public computer:</td> <td><asp:CheckBox id="PersistCheckBox" runat="server" autopostback="true" /></td> </tr> </tbody> </table> <input type="submit" value="Login" runat="server" onserverclick="Login_Click" /> </form> </body> </html>

Windows 98, Windows 2000 SP4, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition
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